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Date: Fri, 26 Mar 2010 07:56:27 +0000 (UTC)
From: "Knut Anders Hatlen (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Created: (DERBY-4600) Use ValueNodeList helper methods in
 CoalesceFunctionNode
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Use ValueNodeList helper methods in CoalesceFunctionNode
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                 Key: DERBY-4600
                 URL: https://issues.apache.org/jira/browse/DERBY-4600
             Project: Derby
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 10.6.0.0
            Reporter: Knut Anders Hatlen
            Priority: Minor


CoalesceFunctionNode manually iterates over argumentsList (a ValueNodeList) in acceptChildren(), preprocess(), remapColumnReferencesToExpressions() and isEquivalent(). ValueNodeList has helper methods for the first three of those, and those helper methods should be used instead to simplify the code. There is no helper method for isEquivalent(), but since very similar code is also found in the isEquivalent() methods of BinaryListOperatorNode and ConditionalNode, we should add a new helper and use it in those classes too.

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